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Single Family ResidenceResidential
$551,529$359 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 90How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $520,000 on Sep 5, 2025

31 RIVA AVE

MILLTOWN, NJ 08850
0
Baths
1,536 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1923
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$552K
$494K low$609K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$520,000 · Sep 5, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,002 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$143,400 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$51,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$92,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$129,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$143,400

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.43
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
16
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
65
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
91
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
43
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.11
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Joyce Kilmer SchoolC+
Middle · Grades 5–8 · 0.2 mi
E
Parkview Elementary SchoolB+
Elementary · Grades PK–4 · 0.8 mi
H
Spotswood High SchoolC+
High · Grades 9–12 · 4.8 mi

District: Spotswood Borough School District

Neighborhood · ZIP 08850These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.46
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.98

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.8,284
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,308 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$134,298
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$147,158
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.49 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

31 Riva Ave measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth less than 74% of homes in Milltown 08850
  • Costs less per square foot than 74% of homes in Milltown 08850
  • Has a smaller lot than 91% of homes in Milltown 08850
  • Older than 91% of homes in Middlesex County

What homes are worth in Milltown 08850

Each bar is how many homes fall in that price range. The marker is this home.

This home
$415K$1M

This home is worth more than 26% of homes in Milltown 08850.

How it measures up in Milltown 08850

The dot is this home. The mark in the middle is the typical home in Milltown 08850.

Estimated value$551,529
CheaperTypical $638,560Pricier

Pricier than 26% of homes nearby

Price per ft²$359
CheaperTypical $391Pricier

Pricier than 26% of homes nearby

Living area1,536 ft²
SmallerTypical 1,641 ft²Bigger

Bigger than 44% of homes nearby

Lot size0.11 ac
SmallerTypical 0.2 acBigger

Bigger than 9% of homes nearby

Year built1923
OlderTypical 1955Newer

Newer than 23% of homes nearby

How 31 Riva Ave ranks against every home in each area.
MeasureThis homeMilltown 08850Middlesex County
Estimated valuepricier than$551,52926% of homes44% of homes
Price per ft²pricier than$35926% of homes50% of homes
Living areabigger than1,536 ft²44% of homes44% of homes
Lot sizebigger than0.11 ac9% of homes32% of homes
Year builtnewer than192323% of homes9% of homes

About 31 Riva Ave

How much is 31 Riva Ave, Milltown, NJ worth?

The TopHap Estimate for 31 Riva Ave, Milltown, NJ is $551,529 as of Aug 30, 2026. The likely range is $493,871 to $609,187. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 31 Riva Ave, Milltown, NJ last sell?

31 Riva Ave, Milltown, NJ last sold on Sep 5, 2025 for $520,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 31 Riva Ave, Milltown, NJ?

31 Riva Ave, Milltown, NJ has 1,536 square feet of living space and a 0.11-acre lot.

When was 31 Riva Ave, Milltown, NJ built?

31 Riva Ave, Milltown, NJ was built in 1923, making it 103 years old. The building has 2 stories.

What schools serve 31 Riva Ave, Milltown, NJ?

31 Riva Ave, Milltown, NJ is assigned to Joyce Kilmer School (middle), rated C+; Parkview Elementary School (elementary), rated B+; Spotswood High School (high), rated C+. All sit in Spotswood Borough School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 31 Riva Ave, Milltown, NJ compare to other homes in Milltown 08850?

Among the 2,852 homes in Milltown 08850, it is worth more than 26% of them ($551,529 against a typical $638,560), its price per square foot is higher than 26% of them ($359 against a typical $391), it is bigger than 44% of them (1,536 ft² against a typical 1,641 ft²), its lot is bigger than 9% of them (0.11 ac against a typical 0.2 ac) and it is newer than 23% of them (1923 against a typical 1955). Measured against all of Middlesex County, it is worth more than 44% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 31 Riva Ave, Milltown, NJ?

The 2025 property tax bill for 31 Riva Ave, Milltown, NJ was $9,002. The county assessed it at $143,400.

More homes on Riva Ave

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Assigned schools

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